Because corruption goes both ways. There's a reason one party blames the other for X when the other is in power, and then do nothing about X when they are in power.
"The report focuses on three areas: taxpayer opinions, cost and feasibility. The report also includes an analysis conducted by an independent third party, as required by the statute. The report also lays out the potential benefits and challenges associated with the IRS implementing a Direct File program."
https://www.irs.gov/newsroom/irs-submits-direct-file-report-...
There is no radical movement discussed within our government to actually solve these problems. No politician is making serious attempts to improve our bureaucratic system.